Shanghai Daoqin Plastics Co., Ltd.

         modified plastics in home appliances, electronics electrical appliances, automotive and other field/area application need flame retardant, flame retardant modified can through add flame retardant achieve. has bromine flame retardant and flame retardant.

         flame retardant

         flame retardant also flame resistant agent, resistant agent or anti agent, easy polymer flame resistant property function property additives. it large more is cycle table/sheet in 第ⅤA(磷), ⅦA(bromine, chlorine) and ⅢA(锑, aluminum)族元素 化 combined material.

         modified plastics flame retardant principle

        一, hot function

        任何燃烧 in relatively short time hot amount is has 限, if can in relatively short time absorption 火源 放出 一部 separation hot amount, that 么火焰 temperature degree reduce, to surface and as used for will already gas can separation understanding formed 自由基 hot amount decrease/reduce, reaction to 一定程 degree made.

         in high temperature conditions lower, flame retardant strong/high 烈 吸 hot reaction, absorption 燃烧放出 部 separation hot amount, reduce can material surface temperature degree, has 效 抑 made can property gas 体 生 formed, retardant 止燃烧 蔓延.

        二, cover/cap function

         in can material in add flame retardant rear, flame retardant in high temperature lower can formed 玻璃状 or stability foam cover/cap 层, oxygen gas, tool has thermal insulation, oxygen, retardant can gas toward outer function, from to flame retardant 目.

        如 has machine retardant type flame retardant hot can generate structure more stability crosslinked solid material or carbon 化层. carbon 化层 形 formed 一方面 can retardant polymer 进一步 hot understanding, 另一方面 can retardant its internal hot separation understanding generate material gas versus and process.

        三, made reaction

         according to 燃烧 链 reaction 理论, 维持燃烧 需 is 自由基. flame retardant can as used for gas versus 燃烧区, 捕捉燃烧 reaction in 自由基, from retardant 止火焰 传播, make 燃烧区 火焰 density decline, most make reaction speed degree decline 直至终止.

        四, gas 体窒息 function

         flame retardant hot separation understanding 出不燃 gas 体, will can material separation understanding can gas concentrated degree to lower below/following. meanwhile for 燃烧区 inner oxygen concentrated degree tool has dilute function, retardant 止燃烧 继续进行, to flame retardant function.

         plastics flame retardant rating

         can property UL 94 and other grade —— is application most plastics material can property can standards. it use evaluation material in by rear can force. according to speed degree, time, resistant can force and is 否燃烧 can has multiple methods.

         plastics flame retardant rating: 由HB, V-2, V-1, V-0, 5VB toward 5VA逐 grade increase. HB: UL 94 standards in most low flame retardant rating.

         and flame retardant development also has flame retardant technology. flame retardant technology is 指, in 磷系, 卤系, nitrogen and machine flame retardant between, or certain type flame retardant internal composite/compounding 化. due to flame retardant in application in, mono flame retardant 往往存 in certain types defect, difficult meet/satisfy 人们越 越 high requirements, therefore through flame retardant technology, can comprehensive types or types above flame retardant long 处, long short, most large degree flame retardant 协同效果, to decrease/reduce use amount, reinforcement flame retardant and other function.